Brake pedal judder?

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MrParkson
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Brake pedal judder?

Post by MrParkson » Wed Jul 11, 2018 5:28 pm

Just wanting to know if other people are experiencing this or is it just me.

Since having my car, the brake pedal often judders and kind of grinds, this happens when shifting from Drive to Park/Reverse or Reverse to Drive/Park ect... It also happens when the auto hold feature kicks in at junctions ect...

It varies in severity depending how much pressure I have applied to the brake pedal (more pressure = less judder, less pressure = more judder).

I thought it was just a "quirk" of the transmission system but now not so sure?
XC40 FE T5 Crystal White 20" LAVA!


Shaenei
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Re: Brake pedal judder?

Post by Shaenei » Wed Jul 11, 2018 6:29 pm

Won't bother trying to help you in future MrAggressive
Last edited by Shaenei on Thu Jul 12, 2018 5:42 pm, edited 2 times in total.
XC40 Crystal White First Edition with T5 engine polestar'ed, lava carpet & 19" Alloys

Ordered: 11th March
Delivered: 19th October


MrParkson
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Re: Brake pedal judder?

Post by MrParkson » Wed Jul 11, 2018 9:26 pm

Shaenei wrote:
Wed Jul 11, 2018 6:29 pm
Most common reason for judder in the braking system is warped discs.

Do you ride the brakes or apply slowly over a long time?
Shaenei I am well aware of this, if you read my post you will see this happens when shifting and when auto hold activates, not when braking to come to a stop. It happens only when I am at a stand still. It is a mechanical judder not that of a warped disc.
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pjm007
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Re: Brake pedal judder?

Post by pjm007 » Wed Jul 11, 2018 10:17 pm

MrParkson wrote:
Wed Jul 11, 2018 9:26 pm
Shaenei wrote:
Wed Jul 11, 2018 6:29 pm
Most common reason for judder in the braking system is warped discs.

Do you ride the brakes or apply slowly over a long time?
Shaenei I am well aware of this, if you read my post you will see this happens when shifting and when auto hold activates, not when braking to come to a stop. It happens only when I am at a stand still. It is a mechanical judder not that of a warped disc.

Haven't noticed it in my Big Blue MrP. Worth a check at the dealer?
It was an XC40 FE D4 AWD Auto - Bursting Blue/Charcoal/20". On the road since March 9th. Sold on August 20th. It was Polestarred. :)


MrParkson
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Re: Brake pedal judder?

Post by MrParkson » Wed Jul 11, 2018 10:50 pm

Thanks Pjm, it's really quite noticeable. As mentioned I thought it was quite normal and didn't think too much of it, but as time has gone on it just seems it cannot be normal, almost like the auto hold is grinding a gear or not engaging as smooth as it should. Adding to the list of defects to give to my dealer :?
XC40 FE T5 Crystal White 20" LAVA!


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pjm007
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Re: Brake pedal judder?

Post by pjm007 » Thu Jul 12, 2018 8:03 am

MrParkson wrote:
Wed Jul 11, 2018 10:50 pm
Thanks Pjm, it's really quite noticeable. As mentioned I thought it was quite normal and didn't think too much of it, but as time has gone on it just seems it cannot be normal, almost like the auto hold is grinding a gear or not engaging as smooth as it should. Adding to the list of defects to give to my dealer :?

Thought again about what you described and listened carefully this morning. I do now think I hear something similar. Not a judder but certainly a grind. Hadn’t thought too much of it before, but there’s definitely something there.
It was an XC40 FE D4 AWD Auto - Bursting Blue/Charcoal/20". On the road since March 9th. Sold on August 20th. It was Polestarred. :)


MrParkson
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Re: Brake pedal judder?

Post by MrParkson » Thu Jul 12, 2018 12:16 pm

Well that's vaguely promising to me, though mine seems much worse, to the point where passengers have commented on it. Would appear nobody else has noticed it to the same extent I have, booking mine in for an appointment next weekend as I speak (type).
XC40 FE T5 Crystal White 20" LAVA!


johnbluerio
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Re: Brake pedal judder?

Post by johnbluerio » Mon Jul 16, 2018 9:10 pm

I have noticed a similar judder from start in reverse on a slope when you release the brake gently and slowly apply the gas, if you do it more aggressively it does not occur, ( when you are reversing down a narrow drive you do it carefully with a new car) I believe its mechanical when the disc and pad bite and release on different parts of the disc and on different wheels. It could still be a bit of newness only done 2K miles.
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